code: def randomwait():
      import time
      from random import random
  
      time.sleep(random())
      return time.time()
  
file_path: ipyparallel/examples/dagdeps.py
imports: from random import randint
  import networkx
  import ipyparallel
label_desc: Use image node_id 1 for calling a global function with example usage: randomwait() and returns: time